Explanation:
The prefix milli means 1000. So there are 1000 milliseconds in 1 second. We can use that relationship to find the answer to our problem.
1000 milliseconds = 1 second
72 milliseconds = 72 milliseconds * 1 second/(1000) milliseconds = 0.072 seconds
72 milliseconds = 0.072 seconds = 7.2 * 10^(-2) seconds
Answer: There are 7.2 * 10^(-2) seconds in 72 milliseconds.
